# Structural Analysis MCQ (Multiple Choice Questions)

1. Which of the following structural loads are not applied commonly to a building?

Explanation: Rest three types of loads are always applied to buildings.

2. In the case of a structural member supporting more than one floor with load exceeding 100psf., what is the maximum permitted reduction %?
a) 20
b) 25
c) 15
d) 10

Explanation: In buildings supporting more than one floor, studies have shown that rarely it is loaded (a floor) with more than 80% of its design load.

3. Which of the following is statically determinate structure?
a) Two hinged arch
b) Fixed beam
c) Double overhanging
d) Continuous beam

Explanation: Double overhanging can be analysed by available three equilibrium equations i.e. ∑Fx=0, ∑Fy=0, and ∑M = 0.

4. In the equation U-0.9D + 1.6W + 1.6H, what is the load factor for H if the structural action of H counteracts that due to W or E?
a) 0.005
b) 0
c) 0.1
d) 0.05

Explanation: H should be included in design resistance here as lateral earth pressure opposes action of other forces.

5. What will be Vmax in the above question if the hospital is made up of structural steel frames?
a) .04813gw
b) .01813gw
c) .02813gw
d) .03813gw

Explanation: Vmax = SDSW/(R/I), and value of R foe structural steel frames is approximately 8.

6. If we use link support in a structural system, then how many unknowns would we have?
a) 1
b) 2
c) 0
d) 4

Explanation: There will always be only 1 unknown if link support is used and that is the force acting along the axis of the link.

7. Which of the following material is not used in making trusses?
a) Metal bars
b) Concrete
c) Wooden struts
d) Channel

Explanation: Concrete is good in compression but weak in tension.

8. Calculate the force in member BC.

a) 0KN
b) $$\sqrt{2}$$ KN (TENSILE)
c) 1KN (TENSILE)
d) 1KN (COMPRESSIVE)

Explanation: By observing the member BC and member CD, it is not acted upon by any form of external forces, thus zero force is introduced into them. Thus, member BC and member CD are zero forces member.

9. Why is base plate provided in short roof trusses?
a) For rigidity
b) As provision for temperature related expansion/contraction
d) For stability

Explanation: Base plate is provided on one end of the long roof truss so that it can slide in case of temperature fluctuations.

10. Calculate the kinematic indeterminacy of the following pin jointed plane frame.

a) 15
b) 12
c) 13
d) 14

Explanation: The truss is supported by hinged support at one end and roller support at other end. Hinged support in a pin jointed plane frame does not offers any degree of freedom as rotation is not considered. But roller support offers horizontal movement and hence degree of freedom is 1. For the given truss, it consists of six pin joint offering two degree of freedom each. Therefore, the degree of freedom is 12 + 1 = 13.

11. Calculate the horizontal thrust for the two hinged semicircular arch loaded with point load at its crown.

a) $$\frac{W}{2\pi}$$
b) $$\frac{4RW}{3\pi}$$
c) $$\frac{W}{\pi}$$ 2
d) $$\frac{W}{\pi}$$

Explanation: ∑H = 0
H = $$\frac{∫M.y dy}{∫y^2 dy}$$
Y = $$\sqrt{R^2- x^2} – \sqrt{R^2-(\frac{L^2}{2})}$$
Hence, H = $$\frac{W}{\pi}$$

12. Which of the following is false for deflection of a point nearby a fixed support?
a) Displacement and slope is zero
b) Displacement as well as slope is non-zero
c) Displacement is zero
d) Slope is zero

Explanation: Due to presence of vertical reaction and moment, there won’t be any displacement and slope will be zero.

13. ILD for the shear force at the support of the cantilever beam is __________

a)
b)
c)
d)

Explanation: For drawing ILD of shear force at the support we must neglect the support at the given point and then lift the member providing it unit displacement upward and let the rest of the beam follow the suit.

14. Which structure will perform better during earthquake?
a) Statically determinate and indeterminate
b) Depends upon magnitude of earthquake
c) Statically indeterminate
d) Statically determinate

Explanation: Indeterminate structure has a tendency to redistribute its load to its redundant supports in case of overloading.

15. Which type of structure would cost less in terms of materials?
a) Statically indeterminate
b) Both will cost equally
d) Statically determinate

Explanation: Statically indeterminate would cost less as they can support a loading with thinner members and increased stability.

16. The beam shown in the figure carries loads of 20kN and 40kN at point C and D respectively and produces a deflection of 6mm at point E. To produce a deflection of 8mm and 5mm at C and D respectively, the load required at E would be ______

a) 40kN
b) 60kN
c) 20kN
d) 50kN

Explanation: By Betti’s Theorem,
20 * 8 + 40 * 5 = W * 6
W = 60kN.

17. What is the relation between Fad and Fda in the below figure?

Explanation: Magnitudes will be same as stated above. Now, sign will be opposite as slope at B won’t change in deflection diagram and there won’t be and vertical deflection at point C.

18. Calculate the k value of the member BC for the given external redundant truss, considering the horizontal reaction of support B as a redundant force.

a) 2.89kN
b) 0kN
c) 3kN
d) 1kN

Explanation: If the support reaction at support is considered 1kN rightward, the horizontal force at the joint will be balanced by horizontal force in member AB. Thus, member BC becomes a zero-force member.

19. Which of the following is carried by truss members?

Explanation: Truss members are only capable of carrying axial loads.

20. Carryover Moment at end B due to moment M applied at end A for the given beam is _______

a) -M
b) +$$\frac{M}{2}$$
c) +M
d) 0

Explanation: For a moment applied M at free end with hinged support at another end, as the hinged support cannot carry or resist any bending moment thus carry over moment is zero.

21. When a structural member of the uniform section is subjected to a moment at one end only, then the moment required so as to rotate that end to produce a unit slope, is called _____
a) Stiffness of member
b) Capacity of member
c) Potential of member
d) Resistance of member

Explanation: When a structural member of the uniform section is subjected to a moment at one end only, then the moment required so as to rotate that end to produce a unit slope, is called stiffness of the member. Stiffness is basically a measure of the ability of the member to resist rotational deformation.

22. If in an interior beam, adjacent structures are exactly similar then the tributary area is:-
a) Obtuse triangle
b) Right angled triangle
c) Acute triangle
d) Trapezium

Explanation: Since, the structures are similar; angles of triangle will be 45 and 90 degrees.

23. What will be the static lateral force at 10th level of a structure if total gravity load is x and portion assigned to the 10th level is 10%?
a) 0.01x
b) x
c) 0.001x
d) 0.1x

Explanation: Fx = 0.01wx.

24. If a structure has total 10 joints, then what should be the minimum no. of joints in which equilibrium equations should be concurrently satisfied for stability?
a) 9
b) 10
c) 8
d) 7

Explanation: For stability, equilibrium equations should be satisfied concurrently at each and every joint of the structure.

25. If a structure has 2j – r no. of members, then it will be:-
a) depends upon structure
b) depends upon magnitude of load
c) unstable
d) stable

Explanation: In these cases, structures can be stable as well unstable.

26. The following structure is ________

a) Statically Unstable
b) Geometrically Unstable
c) Internally Unstable
d) Stable

Explanation: The following structure has minimum three reaction required for statically stability, it has no concurrent reactions and thus it is geometrically stable. It regains its original position if laterally displaced. Hence, it’s a stable structure.

27. Ui is not developed when?
a) Structure deforms
b) Structure elongates
c) External force is zero
d) Structure bends

Explanation: Ui is developed when structure deforms, which is happening in other three options.

28. Which of the following methods for solving indeterminate structures are easiest for computational purposes?
a) Displacement method
b) Method of consistent deformation
c) Moment area method
d) Force method

Explanation: A and C are same options and deflection method requires less effort.

29. Which of the following methods of structural analysis is a force method?
a) three moment equation
b) slope deflection method
c) column analogy method
d) moment distribution method

Explanation: The column analogy method is a force method used to analyze the indeterminate structures mainly frames, fixed beams, and arches

30. Force-displacement requirement of statically indeterminate structures depend upon which factor?
a) supports
b) material’s response

Explanation: It depends upon material’s response. We have assumed the material to linear elastic for further discussions.

31. To draw qualitative ILD of indeterminate structure, which of the following concept is used.
a) Mullers Breslou’s Principle
b) Kani’s Method
d) Castigilano’s First energy theorem

Explanation: Mullers Breslou’s Principle is very useful in performing a qualitative analysis of ILD for indeterminate structure. Unit Load Method, Castigliano’s First Theorem and Kani’s Method are among various methods to determine displacement and rotation in a structure.

32. Which one the following is the ILD for the bending moment at section C for the given fixed beam?

a)
b)
c)
d)

Explanation: For the drawing ILD for the shear force at a particular section, we assume roller hinge in between and provide unit displacement in upward and downward direction alongside. Since it is an indeterminate structure, variation would not be linear as indeterminate cases.

33. Which of the following material will have the highest value of response modification factor?
a) Structural steel frames
b) Reinforced concrete shear walls
c) Wood
d) Reinforced concrete frames with flexible joints

Explanation: More ductile a material is, higher will be the value of response modification factor.

## Chapterwise Multiple Choice Questions on Structural Analysis

Our 1000+ MCQs focus on all topics of the Structural Analysis subject, covering 100+ topics. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice.

The section contains Structural Analysis multiple choice questions and answers on tributary areas, live load reduction, loading conditions for strength and stress design.

## 3. Structural Analysis MCQ on Analysis of Statically Determinate Structures and Trusses

The section contains Structural Analysis MCQs on idealized structure, determincy and stability, trusses types, coplanar trusses classification, joints and sections methods, space trusses and assumptions.

## 4. Structural Analysis MCQ on Analysis of Kinematically Determinate Structures & Plane Trusses

The section contains Structural Analysis multiple choice questions and answers on plane trusses assumptions, kinematic indeterminacy of beams, frames and trusses.

## 5. Structural Analysis MCQ on Internal Loadings Developed in Structural Members

The section contains Structural Analysis questions and answers on internal loadings, shear and moment diagrams for beam and frame.

## 6. Structural Analysis MCQ on Cables and Arches

The section contains Structural Analysis MCQs on three hinged arch, arches, cables subjected to concentrated loads and uniform distributed loads.

## 7. Structural Analysis MCQ on Influence Lines and Approximate Analysis for Statically Determinate Structures

The section contains Structural Analysis multiple choice questions and answers on influence lines, qualitative influence lines, influence lines for floor griders and beams, portal frames and trusses, lateral loads on building frames, maximum shear and moment, influence line diagrams and portal frames numericals.

## 8. Structural Analysis MCQ on Deflections

The section contains Structural Analysis questions and answers on deflections diagrams, elastic beam theory, double integration method, moment area theorems and conjugate beam method.

## 9. Structural Analysis MCQ on Deflections Using Energy Methods

The section contains Structural Analysis MCQs on strain energy, work and energy principles, trusses and castiglianos theorem, indeterminate structures, beams and frame.

## 10. Structural Analysis MCQ on Analysis of Statically Indeterminate Structures by the Force Method

The section contains Structural Analysis multiple choice questions and answers on force method analysis, influence lines for indeterminate beams, redundant trusses analysis, qualitative influence lines, bettis law and trusses analysis.

## 11. Structural Analysis MCQ on Slope-Deflection Equations

The section contains Structural Analysis questions and answers on displacement method analysis, slope deflection analysis, analysis of beams, analysis of frames with sidesway and no sidesway, dki and dsi.

## 12. Structural Analysis MCQ on Moment Distribution

The section contains Structural Analysis MCQs on beams and frames moment distributions, stiffness factor modifications and frames computer analysis.

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